Carrier HH18HA296 Limit Switch 318973-401 common failure points in standard

common failure points in standard pressure switches

eliminating installation delays

reducing strain on the furnace control board

This multi-tap transformer features a tri-voltage primary (120/208/240V AC)

This HVAC sensor guard ensures operational reliability by preventing impact-related downtime in harsh mechanical rooms

Carrier HH18HA296 Limit Switch 318973-401 common failure points in standardThe Carrier HH18HA296 Limit Switch is a critical OEM replacement part engineered to maintain system integrity by monitoring discharge air or internal temperatures. This assembly serves as a high limit safety device, designed to open the electrical circuit if temperatures exceed the thermal cutout thresholdtypically calibrated around 300F for specific furnace and air handler applications. By integrating this genuine Carrier part, technicians ensure